/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.test.api.task;

import org.activiti.engine.impl.test.PluggableFlowableTestCase;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.engine.test.Deployment;

public class TaskBatchDeleteTest extends PluggableFlowableTestCase {

    /**
     * Validating fix for ACT-2070
     */
    @Deployment
    public void testDeleteTaskWithChildren() throws Exception {

        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("testBatchDeleteOfTask");
        assertNotNull(processInstance);
        assertFalse(processInstance.isEnded());

        // Get first task and finish. This should destroy the scope and trigger some deletes, including:
        // org.flowable.task.service.Task 1, Identity link pointing to task 1, org.flowable.task.service.Task 2
        // The task deletes shouldn't be batched in this case, keeping the related entity delete order
        org.flowable.task.api.Task firstTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
                .taskDefinitionKey("taskOne").singleResult();
        assertNotNull(firstTask);

        taskService.complete(firstTask.getId());

        // Process should have ended fine
        processInstance = runtimeService.createProcessInstanceQuery()
                .processInstanceId(processInstance.getId())
                .singleResult();
        assertNull(processInstance);

    }

    @Deployment
    public void testDeleteCancelledMultiInstanceTasks() throws Exception {

        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("testBatchDeleteOfTask");
        assertNotNull(processInstance);
        assertFalse(processInstance.isEnded());

        org.flowable.task.api.Task lastTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
                .taskDefinitionKey("multiInstance").listPage(4, 1).get(0);

        taskService.addCandidateGroup(lastTask.getId(), "sales");

        org.flowable.task.api.Task firstTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
                .taskDefinitionKey("multiInstance").listPage(0, 1).get(0);
        assertNotNull(firstTask);

        taskService.complete(firstTask.getId());

        // Process should have ended fine
        processInstance = runtimeService.createProcessInstanceQuery()
                .processInstanceId(processInstance.getId())
                .singleResult();
        assertNull(processInstance);
    }
}
